diff --git a/SimaiSharp/src/Structures/MaiChart.cs b/SimaiSharp/src/Structures/MaiChart.cs
index 9976530..2ab3f34 100644
--- a/SimaiSharp/src/Structures/MaiChart.cs
+++ b/SimaiSharp/src/Structures/MaiChart.cs
@@ -6,8 +6,8 @@ namespace SimaiSharp.Structures
 	[Serializable]
 	public sealed class MaiChart
 	{
-		public float?           FinishTiming    { get; internal set; }
-		public NoteCollection[] NoteCollections { get; internal set; } = Array.Empty<NoteCollection>();
-		public TimingChange[] TimingChanges { get; internal set; } = Array.Empty<TimingChange>();
+		public float?           FinishTiming;
+		public NoteCollection[] NoteCollections = Array.Empty<NoteCollection>();
+		public TimingChange[] TimingChanges = Array.Empty<TimingChange>();
 	}
 }